Frequencies for first 10,000 rows of vin_6 variable in vehicle dataset :

      vin_6 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          3        0.03        0.03
          0 |        392        3.92        3.95
          1 |      2,583       25.83       29.78
          2 |      1,270       12.70       42.48
          3 |        831        8.31       50.79
          4 |        734        7.34       58.13
          5 |      1,362       13.62       71.75
          6 |        516        5.16       76.91
          7 |        424        4.24       81.15
          8 |        360        3.60       84.75
          9 |        623        6.23       90.98
          A |        149        1.49       92.47
          B |        136        1.36       93.83
          C |         63        0.63       94.46
          D |         50        0.50       94.96
          E |         33        0.33       95.29
          F |         22        0.22       95.51
          G |         27        0.27       95.78
          H |         55        0.55       96.33
          J |         33        0.33       96.66
          K |         13        0.13       96.79
          L |         27        0.27       97.06
          M |         47        0.47       97.53
          N |         12        0.12       97.65
          P |         14        0.14       97.79
          Q |          1        0.01       97.80
          R |         38        0.38       98.18
          S |         67        0.67       98.85
          T |         18        0.18       99.03
          U |         12        0.12       99.15
          V |          5        0.05       99.20
          W |         13        0.13       99.33
          X |         15        0.15       99.48
          Y |          5        0.05       99.53
          Z |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016